Electric heating system for fluids



Oct. 6, 1931. H. HERoY ELECTRIC `HEATING SYSTEM vFOR FLUIDS Filed Nov. 28, 1930 INVEN TOR.

Patented Oct. 6, 1931 u UNITED STATES PATENT ori-ICE` HERBERT HEROY, F BELMAR, NEW JERSEY ELECTRIC HEATING SYSTEM FOR ELU-IDS Application filed November 28, 1930. Serial No. 498,875.

This invention relates to an electric heatlarge heating area so that khigh temperatures ing system for iuids and is intended primay be obtained in very short `intervals of marily for heatingr liquids but it may be used time. The electric coils of the type used in for heating fluids of a gaseous nature as Well devices of this' kind areliable to become inf as liquids. Its objects are toconcentrate the jured if the current is .turned on Without 55 heat from an electric heating coil on a comsome means of carrying away. the heat and, paratively thin section of fluid which is con- Vfor this purpose, the valve which controls the Y tinually in motion; another object of the insupply, also controls the electricl current so vention is to provide a container with a pluthat when the valve isclosed the electric cir rality of chambers, one of Which contains a cuit is open'and Whenthe valve Aisopen the 60 heating coil and in Which the luid is passed electric circuit is closed. It should be obalternatively in opposite directions through served that thevpassage of the Huid, through said chambers; other objects of the invention the device, may be reversed Without materialreside in the construction and arrangement ly effecting the results, that is, the supply of the elements of the device as more parmay be connected to the delivery orifice and o5 ticularly described in the following Speclthe delivery obtained from the supply oricel cation and illustrated in the aCcOInpany'lIlg yIn theconstruction of the device the cylin#y drawings, in which; drical housing is provided With'a pair of Fig. 1 is a sectional elevation showing the removable end caps, or a base and top, which system complete, and; hold the device together and provides a space 70 Fig. 2 is a horizontal cross-section, on line at the top between the chambers for the free 2-2, Fig. 1. circulation of the fluid. v

This invention is disclosed in U. S. Patent- In the drawings, 11 is the housing, which 1,809,899 of .I une 16, 1931. In this patent is preferably cylindrical in form, with the electric heating unit is used to heat, ork flanged ends to which the cap 12 is secured at 75 boil Water on the Hash-boiler principle for the upper end'and the cap or base 13 is seinfusion machines. In this construction the cured at lovverend. A central tube 15 is source of supply is connected to a central tube screwed into the base 13 at 14 andy connects Which is closed at both ends but is provided directly with the supply pipe 17. The top with perfor-ations at the end opposite the of this tube is providedswith perforationsat so supply so that a fluid entering this tube, 16,leading into the chamber 19 which is enunder pressure, passes through it and through 'closed by the 'outer tube 24 Seated on a ledge the perforations to the chamber enclosing on thebase 13 and held imposition by the thel heating coil. This chamber is enclosed projection 28 of cap 12 engaging the closed by an outer tube also closed at both ends, but upper end of the tube. f This tube, when in 85 having perforations at the end opposite t0 position, is closed at bothy ends and is prothe position of the perforations in the central vided with perforations at 27 Which connects tube and this outer tube is enclosed by a f the chamber 19 with the chamber 25. The spaced housing, having a delivery orifice at perforations 27, it will be noted, are inthe A 40 the end opposite the perforations in the outer opposite position relative to the perforation 90 tube. The result is that the Huid, under pres- 16 so that fluid entering by the delivery pipe sure, is continually moving in the inner tube, 17 passes through the central tube 15 in the which is heated by the ysurrounding heating direction of the arrows through the apertures coil, then it is spread out through the per- 16 and in the reverse direction through Y foi-ations and passes in the reverse direction chamber 19 to the apertures 27 and through 95 over the heating coil and again is spread out, n chamber 2o, in the reverse direction to the by the perforations, in the outer coil and movement 1n chamber 19, to the delivery ori` passes in the reverse direction around the ice 26. outer tube to the delivery orifice. In this Aheating coil 20,211s provided in cham- 0 `way the Huid is spread out and exposed to a ber 19 and is preferably constructed in a 100 double spiral, as shown. The stock of the heating coil is a commercial product, adapted to this invention. The ends of this coil are led out through suitable gaskets, secured by the caps 22 and 23, on each end and the two coils are connected in multiple circuit by the wires 3l and 32 connecting t0 transformer 33, the primary of which is Controlled by the switch 34 connected to the supply mains 35. Switch 3l is, preferably, connected by rod 36 with an extension 37 of the valve 18 in the supply pipe 17. Vhen the valve is closed, switch 34 is open and when the valve is moved to the open position the switch 35 is closed.

lt will be noted that the system ma be subjectto considerable pressure, either rom a water or air supply, and to resist this pressure, tube 15 is securely fastened to the base 13 while the tube 24 is held in position by the housing'.

This invention admits of ay variety of applications and is intended to cover a full range of equivalents.

Having thus described my invention, I claim:

1. An electrical heating system for fluids comprising a cylindrical housing, a pair of end caps for said cylinder, a central tube in said housing having one end screwed into one of said caps opposite a tluid'supply pipe and the opposite end closed but provided with perforations at the closed end, an electric heating' coil surrounding said central tube, an outer tube of smaller diameter than said cylindrical housing and longer than said center tube enclosing said heating coil and having one end closed and the opposite end provided with perforations at the end in the opposite position to the perforated end of said central tube and resting in a groove in one of said end caps and a fluid delivery pipe connected to an aperture in said cylindrical housing.

2. An electric heating system for fluids comprising a cylindrical housing having a base and a top, a central tube in said housing secured to said base and closed at the ends, a lluid supply pipe connected with the interior of said central tube, an electric heating coil surrounding said central tube, an outer tube of smaller diameter than said housing enclosing said heating coil and central tube and closed at one end and having the opposite end resting in a groove in said base and a projection on said top engaging the closed end to hold said tube in place and a fluid delivery pipe connected to an aperture in said housing, said central tube being perforated at the end opposite the supply connection and said outer tube being perforated at the end in the opposite position to the perforated end of said central tube.

v In testimony whereof I alx my signature.

HERBERT HEROY. 

